Dev Builds » 20260208-1422

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 15. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

Host Duration Avg Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo
ncm-dbt-01 06:43:36 582069 4000 1702 374 1924 +119.89 ± 4.53 0 38 615 1328 19 +272.09 ± 13.71
ncm-dbt-02 06:44:38 586180 4004 1748 383 1873 +123.38 ± 4.5 0 31 600 1346 25 +281.26 ± 13.87
ncm-dbt-03 06:43:31 586041 4000 1742 388 1870 +122.44 ± 4.52 1 32 602 1342 23 +279.17 ± 13.85
ncm-dbt-04 06:44:39 567792 4002 1738 353 1911 +125.42 ± 4.5 0 23 605 1338 35 +284.64 ± 13.78
ncm-dbt-05 06:44:32 582206 3994 1749 370 1875 +125.1 ± 4.67 1 35 584 1338 39 +282.63 ± 14.08
20000 8679 1868 9453 +123.24 ± 2.03 2 159 3006 6692 141 +279.92 ± 6.19

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
454294 ncm-dbt-04 565508 2 0 0 2 0.0 ± 34.02 0 0 1 0 0 0.0 ± 30.47
454293 ncm-dbt-02 583070 4 2 1 1 +88.51 ± 137.63 0 0 1 1 0 +190.5 ± 634.21
454292 ncm-dbt-05 578177 494 213 48 233 +120.67 ± 13.25 0 5 76 162 4 +270.46 ± 39.34
454291 ncm-dbt-01 581070 500 208 51 241 +112.91 ± 13.04 0 7 80 162 1 +254.16 ± 38.36
454290 ncm-dbt-04 568673 500 232 49 219 +133.34 ± 13.08 0 3 68 172 7 +304.07 ± 41.65
454289 ncm-dbt-02 587155 500 214 54 232 +115.22 ± 12.85 0 4 85 158 3 +256.44 ± 36.95
454288 ncm-dbt-03 586308 500 215 45 240 +123.02 ± 13.82 0 7 72 165 6 +273.0 ± 40.54
454287 ncm-dbt-05 580406 500 216 47 237 +122.24 ± 13.3 0 8 67 173 2 +280.42 ± 42.05
454286 ncm-dbt-01 581527 500 213 49 238 +118.33 ± 12.44 0 4 79 166 1 +270.57 ± 38.47
454285 ncm-dbt-02 585337 500 217 45 238 +124.6 ± 13.09 0 5 72 169 4 +282.94 ± 40.5
454284 ncm-dbt-04 567640 500 215 44 241 +123.81 ± 12.73 0 3 77 166 4 +280.42 ± 38.93
454283 ncm-dbt-03 586646 500 209 42 249 +120.67 ± 12.78 0 3 81 162 4 +270.57 ± 37.86
454282 ncm-dbt-05 584706 500 218 44 238 +126.17 ± 13.24 0 5 71 169 5 +285.49 ± 40.81
454281 ncm-dbt-02 586308 500 217 42 241 +126.97 ± 12.66 0 4 70 173 3 +293.29 ± 41.07
454280 ncm-dbt-01 580738 500 202 43 255 +114.45 ± 13.03 0 6 81 161 2 +256.44 ± 38.07
454279 ncm-dbt-04 567878 500 216 45 239 +123.81 ± 12.54 0 2 79 165 4 +280.42 ± 38.28
454278 ncm-dbt-03 586012 500 229 50 221 +130.14 ± 11.78 0 1 71 176 2 +306.84 ± 40.47
454277 ncm-dbt-05 582277 500 219 36 245 +133.34 ± 12.89 0 2 70 171 7 +304.07 ± 40.91
454276 ncm-dbt-04 566533 500 212 45 243 +120.67 ± 12.41 0 4 76 169 1 +277.93 ± 39.29
454275 ncm-dbt-01 584874 500 215 48 237 +120.67 ± 12.97 0 6 73 169 2 +275.45 ± 40.24
454274 ncm-dbt-02 585169 500 217 40 243 +128.55 ± 12.04 0 2 71 175 2 +301.33 ± 40.6
454273 ncm-dbt-03 587028 500 220 49 231 +123.81 ± 13.1 0 6 70 171 3 +282.94 ± 41.13
454272 ncm-dbt-05 583824 500 216 38 246 +129.35 ± 13.17 1 2 70 172 5 +298.62 ± 41.01
454271 ncm-dbt-01 582527 500 221 42 237 +130.14 ± 12.78 0 2 73 169 6 +295.94 ± 39.99
454270 ncm-dbt-04 568355 500 214 38 248 +127.76 ± 12.84 0 3 73 169 5 +290.66 ± 40.08
454269 ncm-dbt-02 588984 500 222 45 233 +128.55 ± 11.83 0 1 73 174 2 +301.33 ± 39.86
454268 ncm-dbt-03 583531 500 222 53 225 +122.24 ± 12.57 0 4 75 169 2 +280.42 ± 39.57
454267 ncm-dbt-05 581028 500 224 51 225 +125.38 ± 13.43 0 4 76 163 7 +277.93 ± 39.29
454266 ncm-dbt-01 578836 500 215 44 241 +123.81 ± 13.1 0 6 70 171 3 +282.94 ± 41.13
454265 ncm-dbt-02 586774 500 226 52 222 +126.17 ± 12.49 0 4 70 174 2 +293.29 ± 41.07
454264 ncm-dbt-04 567997 500 218 43 239 +126.97 ± 12.66 0 2 76 167 5 +288.06 ± 39.11
454263 ncm-dbt-03 586774 500 217 55 228 +116.77 ± 12.83 0 3 86 157 4 +258.75 ± 36.62
454262 ncm-dbt-01 582611 500 214 47 239 +120.67 ± 12.97 0 5 76 166 3 +273.0 ± 39.35
454261 ncm-dbt-05 584285 500 220 50 230 +123.02 ± 13.47 0 5 76 163 6 +273.0 ± 39.35
454260 ncm-dbt-02 586308 500 212 52 236 +115.22 ± 13.2 0 5 84 157 4 +254.16 ± 37.27
454259 ncm-dbt-04 568951 500 218 53 229 +119.11 ± 13.34 0 4 83 157 6 +261.07 ± 37.44
454258 ncm-dbt-03 584117 500 220 55 225 +119.11 ± 12.99 1 4 75 169 1 +275.45 ± 39.63
454257 ncm-dbt-05 582945 500 223 56 221 +120.67 ± 12.78 0 4 78 165 3 +273.0 ± 38.74
454256 ncm-dbt-01 584369 500 214 50 236 +118.33 ± 12.06 0 2 83 164 1 +270.57 ± 37.24
454255 ncm-dbt-04 568593 500 213 36 251 +128.55 ± 12.24 0 2 72 173 3 +298.62 ± 40.29
454254 ncm-dbt-02 586520 500 221 52 227 +122.24 ± 13.48 0 6 74 165 5 +273.0 ± 39.95
454253 ncm-dbt-03 587919 500 210 39 251 +123.81 ± 12.35 0 4 72 173 1 +288.06 ± 40.46

Commit

Commit ID e3a5c40f0573cbc5e85c8b46b7e30983cd4b5385
Author ppigazzini
Date 2026-02-08 14:22:06 UTC
feat(build): use lld for clang if available Also simplify the CI. closes https://github.com/official-stockfish/Stockfish/pull/6592 No functional change
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